U.S. patent application number 16/617259 was filed with the patent office on 2020-11-05 for secondary battery cell module and assembling method thereof.
This patent application is currently assigned to LG Chem, Ltd.. The applicant listed for this patent is LG Chem, Ltd.. Invention is credited to Dal Mo Kang, Su Chang Kim, Jeong Oh Moon, Jaeuk Ryu, Jae Min Yoo, Ji Su Yoon.
Application Number | 20200350610 16/617259 |
Document ID | / |
Family ID | 1000004973351 |
Filed Date | 2020-11-05 |
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United States Patent
Application |
20200350610 |
Kind Code |
A1 |
Yoo; Jae Min ; et
al. |
November 5, 2020 |
Secondary Battery Cell Module and Assembling Method Thereof
Abstract
A method for assembling a secondary battery cell module by using
an assembling jig including a plurality of guide rods disposed on a
jig plate includes: mounting a lower frame on the jig plate while
the guide rods are inserted into a plurality of arranging
through-holes of the lower frame; disposing a plurality of battery
cells on the lower frame; mounting an upper frame on the battery
cells while the guide rods are inserted into a plurality of
arranging through-holes of the upper frame; fastening the upper
frame and the lower frame together; and separating the assembling
jig from the upper frame and the lower frame.
Inventors: |
Yoo; Jae Min; (Daejeon,
KR) ; Kang; Dal Mo; (Daejeon, KR) ; Moon;
Jeong Oh; (Daejeon, KR) ; Ryu; Jaeuk;
(Daejeon, KR) ; Kim; Su Chang; (Daejeon, KR)
; Yoon; Ji Su; (Daejeon, KR) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
LG Chem, Ltd. |
Seoul |
|
KR |
|
|
Assignee: |
LG Chem, Ltd.
Seoul
KR
|
Family ID: |
1000004973351 |
Appl. No.: |
16/617259 |
Filed: |
October 17, 2018 |
PCT Filed: |
October 17, 2018 |
PCT NO: |
PCT/KR2018/012275 |
371 Date: |
November 26, 2019 |
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
H01M 2/1077 20130101;
H01M 2/06 20130101; H01M 2/105 20130101; H01M 10/0422 20130101 |
International
Class: |
H01M 10/04 20060101
H01M010/04; H01M 2/10 20060101 H01M002/10; H01M 2/06 20060101
H01M002/06 |
Foreign Application Data
Date |
Code |
Application Number |
Nov 9, 2017 |
KR |
10-2017-0148727 |
Claims
1. A method for assembling a secondary battery cell module by using
an assembling jig including a plurality of guide rods disposed on a
jig plate, the method comprising: mounting a lower frame on the jig
plate while the guide rods are inserted into a plurality of
arranging through-holes of the lower frame; disposing a plurality
of battery cells on the lower frame; mounting an upper frame on the
battery cells while the guide rods are inserted into a plurality of
arranging through-holes of the upper frame; fastening the upper
frame and the lower frame together; and separating the assembling
jig from the upper frame and the lower frame.
2. The method of claim 1, further comprising mounting a bottom
plate on the jig plate while the guide rods are inserted into a
plurality of holes in the bottom plate before the mounting of the
lower frame on the jig plate.
3. The method of claim 2, wherein the separating of the assembling
jig from the upper frame and the lower frame is performed by
separating the bottom plate from the jig plate.
4. The method of claim 1, wherein an arranging through-hole of the
lower frame and an arranging through-hole of the upper frame are
disposed at mutually corresponding positions.
5. The method of claim 4, wherein respective numbers of arranging
through-holes of the lower frame and arranging through-holes of the
upper frame are greater than a number of the guide rods of the
assembling jig.
6. The method of claim 1, wherein at least one of the plurality of
battery cells has a cylindrical shape.
7. A secondary battery cell module comprising: a lower frame
including a plurality of triangular columns, a plurality of
connectors each for connecting three adjacent ones of the plurality
of triangular columns, and a plurality of supports each protruding
from a respective one of the plurality of connectors; an upper
frame including a plurality of triangular columns, a plurality of
connectors each for connecting three adjacent ones of the plurality
of triangular columns of the upper frame, and a plurality of
supports each protruding from a respective one of the plurality of
connectors of the upper frame; and a plurality of battery cells
interposed between the lower frame and the upper frame, wherein
arranging through-holes are formed in at least two of the plurality
of connectors of the lower frame and at least two of the plurality
of connectors of the upper frame, and an arranging through-hole of
the lower frame and an arranging through-hole of the upper frame
are disposed at mutually corresponding positions.
8. The secondary battery cell module of claim 7, wherein the
arranging through-holes are formed in more than two of the
plurality of connectors of the lower frame and more than two of the
plurality of connectors of the upper frame.
9. The secondary battery cell module of claim 7, wherein three
auxiliary walls respectively connected to an edge of the triangular
column are further formed on a plurality of connectors of the lower
frame and a plurality of connectors of the upper frame, and the
arranging through-hole is disposed at a center portion in which the
auxiliary wall of the connector is not provided.
10. The secondary battery cell module of claim 7, wherein
respective triangular columns of the lower frame and the upper
frame include three arc-shaped wall sides and three straight sides
for connecting adjacent ones of the arc-shaped wall sides.
11. The secondary battery cell module of claim 10, wherein at least
one of the plurality of battery cells has a cylindrical shape.
12. A secondary battery pack comprising: the secondary battery cell
module of claim 7; a lower case for receiving the secondary battery
cell module; and an upper case for covering the secondary battery
cell module.
13. A jig for assembling a secondary battery cell module,
comprising: a jig plate; and a plurality of guide rods disposed at
predetermined intervals on the jig plate.
14. The jig of claim 13, further comprising: a bottom plate
defining a plurality of holes therethrough.
15. The jig of claim 14, wherein the plurality of holes of the
bottom plate correspond to the plurality of guide rods.
16. The jig of claim 14, wherein the number of the plurality of
holes formed in the bottom plate is equal to or greater than the
number of the plurality of guide rods.
17. The jig of claim 14, wherein the bottom plate is formed of an
elastic material.
18. The jig of claim 17, wherein the elastic material is rubber.
Description
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] The present application is a national phase entry under 35
U.S.C. .sctn. 371 of International Application No.
PCT/KR2018/012275, filed Oct. 17, 2018, published in Korean, which
claims priority to Korean Patent Application No. 10-2017-0148727
filed on Nov. 9, 2017 in the Republic of Korea, the disclosures of
which are incorporated herein by reference.
TECHNICAL FIELD
[0002] The present invention relates to a secondary battery cell
module and an assembling method thereof.
BACKGROUND ART
[0003] The use of a secondary battery which may be semi-permanently
used by recharging it is being gradually extended to power sources
of vehicles as well as a power supply of a portable electronic
device. In the case of the portable electronic device, a secondary
battery made of a single cell is used, and in the case of the
secondary battery used as a power source of vehicles, a battery
pack in which a plurality of battery cells are mounted in a module
to realize high capacity, and a plurality of modules are disposed
according to a predetermined arrangement, is configured.
[0004] Depending on shapes of battery cells, there are various
methods for mounting a plurality of battery cells in a single
module, and in the case of a bar-type battery cell such as with a
cylindrical shape, a bar-type battery cell is disposed between an
upper frame and a lower frame, and the upper frame and the lower
frame are fixed by fastening the same. In this case, the assembling
of upper/lower frames and a battery cell is performed in order of
arranging battery cells on a lower frame, putting an upper frame on
them, and fastening the upper/lower frames. However, a plurality of
cells must be simultaneously assembled, so assembling defects may
be generated by assembling tolerance of respective cells, and to
compensate for this, an additional process such as a process for
fixing cells on the lower frame by use of an adhesive is performed,
thereby increasing time and cost of the assembling process.
DISCLOSURE
Technical Solution
[0005] The present invention has been made in an effort to provide
a method for assembling a secondary battery cell module for
assembling a plurality of battery cells and upper/lower frames
without using an additional process such as fixation of cells using
an adhesive, and a secondary battery cell module assembled by the
method.
[0006] An exemplary embodiment of the present invention provides a
method for assembling a secondary battery cell module by using an
assembling jig including a plurality of guide rods disposed on a
jig plate, including: mounting a lower frame on the jig plate while
the guide rods are inserted into a plurality of arranging
through-holes of the lower frame; disposing a plurality of battery
cells on the lower frame; mounting an upper frame on the battery
cells while the guide rods are inserted into a plurality of
arranging through-holes of the upper frame; fastening the upper
frame and the lower frame together; and separating the assembling
jig from the upper frame and the lower frame.
[0007] The method for assembling a secondary battery cell module
may further include mounting a bottom plate on the jig plate while
the guide rods are inserted into a plurality of holes in the bottom
plate before the mounting of the lower frame on the jig plate, and
the separating of the assembling jig from the upper frame and the
lower frame may be performed by separating the bottom plate from
the jig plate.
[0008] An arranging through-hole of the lower frame and an
arranging through-hole of the upper frame may be disposed at
mutually corresponding positions, respective numbers of arranging
through-holes of the lower frame and arranging through-holes of the
upper frame may be greater than a number of the guide rods of the
assembling jig, and at least one of the plurality of battery cells
has a cylindrical shape.
[0009] Another embodiment of the present invention provides a
secondary battery cell module including: a lower frame including a
plurality of triangular columns, a plurality of connectors each for
connecting three adjacent ones of the plurality of triangular
columns, and a plurality of supports each protruding from a
respective one of the plurality of connectors; an upper frame
including a plurality of triangular columns, a plurality of
connectors each for connecting three adjacent ones of the plurality
of triangular columns of the upper frame, and a plurality of
supports each protruding from a respective one of the plurality of
connectors of the upper frame; and a plurality of battery cells
interposed between the lower frame and the upper frame, wherein
arranging through-holes may be formed in at least two of the
plurality of connectors of the lower frame and at least two of the
plurality of connectors of the upper frame, and an arranging
through-hole of the lower frame and the arranging through-hole of
the upper frame may be disposed at mutually corresponding
positions.
[0010] The arranging through-holes may be formed in more than two
of the plurality of connectors of the lower frame and more than two
of the plurality of connectors of the upper frame.
[0011] Three auxiliary walls respectively connected to an edge of
the triangular column may be further formed on a plurality of
connectors of the lower frame and a plurality of connectors of the
upper frame, the arranging through-hole is disposed at a center
portion in which the auxiliary wall of the connector may not be
provided, respective triangular columns of the lower frame and the
upper frame may include three arc-shaped wall sides and three
straight sides for connecting adjacent ones of the arc-shaped wall
sides, and at least one of the plurality of battery cells may have
a cylindrical shape.
[0012] A secondary battery pack is configured by receiving the
secondary battery cell module according to an exemplary embodiment
of the present invention in a lower case and covering the same with
an upper case. Another embodiment of the present invention provides
a jig for assembling a secondary battery cell module, including: a
jig plate; and a plurality of guide rods disposed at predetermined
intervals on the jig plate.
Advantageous Effects
[0013] When the method for assembling a secondary battery cell
module according to an exemplary embodiment of the present
invention is used, the battery cell modules may be accurately
arranged on the lower frame, and the upper frame may be accurately
disposed on the arranged battery cell modules to thereby prevent
assembling defects.
[0014] Further, the process for assembling a secondary battery cell
module may be simplified by omitting the additional process such as
fixation of cells using an adhesive, and the assembling time and
cost may be reduced.
DESCRIPTION OF THE DRAWINGS
[0015] FIG. 1 shows a perspective view of a secondary battery cell
module according to an exemplary embodiment of the present
invention.
[0016] FIG. 2 shows a perspective view of an enlarged portion of an
upper frame or a lower frame of a secondary battery cell module
according to an exemplary embodiment of the present invention.
[0017] FIG. 3 shows a top plan view of an enlarged portion of an
upper frame or a lower frame of a secondary battery cell module
according to an exemplary embodiment of the present invention.
[0018] FIG. 4 shows a perspective view of an assembling jig used in
a method for assembling a secondary battery cell module according
to an exemplary embodiment of the present invention.
[0019] FIG. 5 to FIG. 9 show perspective views for sequentially
showing a process for assembling a secondary battery cell module
according to an exemplary embodiment of the present invention.
[0020] FIG. 10 shows an exploded perspective view of a process for
receiving a secondary battery cell module in an upper/lower case
and manufacturing a secondary battery pack according to an
exemplary embodiment of the present invention.
[0021] FIG. 11 shows a perspective view of a secondary battery pack
manufactured by receiving a secondary battery cell module in an
upper/lower case according to an exemplary embodiment of the
present invention.
MODE FOR INVENTION
[0022] The present invention will be described more fully
hereinafter with reference to the accompanying drawings, in which
exemplary embodiments of the invention are shown. As those skilled
in the art would realize, the described embodiments may be modified
in various different ways, all without departing from the spirit or
scope of the present invention.
[0023] In the drawings, the thickness of layers, films, panels,
regions, etc., are exaggerated for clarity. Like reference numerals
designate like elements throughout the specification. It will be
understood that when an element such as a layer, film, region, or
substrate is referred to as being "on" another element, it can be
directly on the other element or intervening elements may also be
present. In contrast, when an element is referred to as being
"directly on" another element, there are no intervening elements
present.
[0024] FIG. 1 shows a perspective view of a secondary battery cell
module according to an exemplary embodiment of the present
invention.
[0025] Referring to FIG. 1, the secondary battery cell module 100
according to an exemplary embodiment of the present invention
includes a lower frame 110, an upper frame 120, and a plurality of
battery cells 130 interposed therebetween. The battery cell 130 is
formed to have a long bar shape, and the present exemplary
embodiment exemplifies a cylindrical battery cell 130. Positive and
negative access terminals 121 and 122 are installed in the upper
frame 120, and a plurality of upper fasteners 123 are formed
thereon. A lower fastener 113 for combination with the upper
fastener 123 is formed on the lower frame 110. The lower fastener
113 and the upper fastener 123 fasten the lower frame 110 and the
upper frame 120 to fix the same through female and male
combination.
[0026] A configuration of the upper and lower frames 110 and 120 of
the secondary battery cell module 100 according to an exemplary
embodiment of the present invention will now be described with
reference to FIG. 2 and FIG. 3.
[0027] FIG. 2 shows a perspective view of an enlarged portion of an
upper frame or a lower frame of a secondary battery cell module
according to an exemplary embodiment of the present invention, and
FIG. 3 shows a top plan view of an enlarged portion of an upper
frame or a lower frame of a secondary battery cell module according
to an exemplary embodiment of the present invention.
[0028] Referring to FIG. 2 and FIG. 3, the upper frame 120 or the
lower frame 110 of the secondary battery cell module includes a
cell region 17 for receiving a cylindrical battery cell 130. The
cell region 17 is formed by a plurality of triangular columns 11
formed near the same, a connector 14 for connecting three adjacent
triangular columns 11, a plurality of auxiliary walls 12 formed on
the connector 14 and connected to one edge of the triangular column
11, and a support 13 protruding toward the cell region 17 from the
connector 14. Each the cell region 17 is surrounded by three
triangular columns 11 and three connectors 14 connecting them, and
three supports 13 protruding from the three connectors 14 prevent
the battery cell 130 from leaving the cell region 17. A wall side
corresponding to three sides of the triangular column 11 has a
circular arc-shaped curve, and a portion corresponding to an apex
is a rectangular straight side. Three auxiliary walls 12 are
disposed on each connector 14, a portion in which no auxiliary wall
12 is provided is provided on a center of the connector 14, and an
arranging through-hole 19 is formed on the portion. The arranging
through-hole 19 represents a hole for allowing a guide rod to pass
therethrough, wherein the guide rod is used to accurately arrange
the upper and lower frames 110 and 120 and a plurality of battery
cells 130 during a process for arranging the battery cells 130 on
the lower frame 110 and putting the upper frame 120 thereon to
assemble the same.
[0029] FIG. 2 and FIG. 3 exemplify a case in which the arranging
through-hole 19 is formed in each connector 14, and the same may be
formed in only some of the connectors 14. The arranging
through-holes 19 may be uniformly distributed on the whole upper
and lower frames 110 and 120 according to a predetermined rule, and
when the arranging through-hole 19 is formed at a predetermined
position of the lower frame 110, an arranging through-hole 19 is
also formed at a corresponding position at the upper frame 120.
That is, the disposing positions of the arranging through-holes 19
are the same on the upper frame 120 and the lower frame 110.
[0030] A method for assembling a secondary battery cell module
according to an exemplary embodiment of the present invention will
now be described with reference to FIG. 4 to FIG. 9.
[0031] FIG. 4 shows a perspective view of an assembling jig used in
a method for assembling a secondary battery cell module according
to an exemplary embodiment of the present invention, and FIG. 5 to
FIG. 9 show perspective views for sequentially showing a process
for assembling a secondary battery cell module according to an
exemplary embodiment of the present invention.
[0032] Referring to FIG. 4, the assembling jig 10 is configured
with a jig plate 1 and a plurality of guide rods 2 disposed thereon
at predetermined intervals.
[0033] As shown in FIG. 5, a bottom plate 3 is provided on the jig
plate 1 of the assembling jig 10. A plurality of holes (not shown)
corresponding to the respective guide rods 2 are formed in the
bottom plate 3, so the bottom plate 3 is provided on the jig plate
1 as the guide rod 2 passes through the same. The number of holes
formed in the bottom plate 3 may be equal to or greater than the
number of guide rods 2. The bottom plate 3 may be formed with an
elastic material such as a rubber so that it may function to absorb
an impact between the assembling jig 10 and the lower frame
110.
[0034] As shown in FIG. 6, the lower frame 110 is disposed on the
bottom plate 3. In this instance, the guide rod 2 passes through
the arranging through-hole 19 of the lower frame 110 described with
reference to FIG. 2 and FIG. 3 to protrude upward, and the lower
frame 110 is provided on the bottom plate 3. In this instance, the
number of arranging through-holes 19 may be equal to or greater
than the number of guide rods 2.
[0035] As shown in FIG. 7, a plurality of battery cells 130 are
disposed on the lower frame 110. The battery cell 130 is received
in the cell region 17 of the lower frame 110 described with
reference to FIG. 2 and FIG. 3, and its downward movement is
limited by the support 13 described with reference to FIG. 2 and
FIG. 3. In this instance, the guide rod 2 protrudes over the
battery cell 130 passing through a space between the battery cells
130.
[0036] As shown in FIG. 8, the upper frame 120 is mounted on a
plurality of battery cells 130, and the upper fastener 123 and the
lower fastener 113 described with reference to FIG. 1 are combined
to each other to thus fix the upper frame 120 and the lower frame
110. In this instance, the guide rod 2 passes through the arranging
through-hole 19 of the upper frame 120 and protrudes upward, one
battery cell 130 is received in the cell region 17 of the upper
frame 120, and the movement in the upward direction by the battery
cell 130 is limited by the support 13. The number of arranging
through-holes 19 may be equal to or greater than the number of
guide rods 2.
[0037] As shown in FIG. 9, the assembling jig 10 is separated by
lifting the bottom plate 3 together with the assembled secondary
battery cell module 100. When the bottom plate 3 is separated, the
secondary battery cell module as shown in FIG. 1 is obtained.
[0038] The secondary battery pack is manufactured by receiving the
assembled secondary battery cell module in the upper/lower
cases.
[0039] FIG. 10 shows an exploded perspective view of a process for
receiving a secondary battery cell module in an upper/lower case
and manufacturing a secondary battery pack according to an
exemplary embodiment of the present invention, and FIG. 11 shows a
perspective view of a secondary battery pack manufactured by
receiving a secondary battery cell module in an upper/lower case
according to an exemplary embodiment of the present invention.
[0040] The secondary battery pack shown in FIG. 10 is manufactured,
as shown in FIG. 11, by receiving the assembled secondary battery
cell module 100 in a lower case 300 and covering the same with an
upper case 200. In this instance, the two access terminals 121 and
122 may be exposed through an opening of the upper case.
[0041] When the secondary battery cell module is assembled
according to the above-described method, the battery cell modules
may be accurately arranged on the lower frame, and the upper frame
may be accurately disposed on the arranged battery cell modules
thereby preventing assembling defects. Further, by omitting
additional process such as fixation of cells by use of an adhesive,
the process for assembling a secondary battery cell module is
simplified, thereby reducing the assembling time and cost.
[0042] While this invention has been described in connection with
what is presently considered to be practical exemplary embodiments,
it is to be understood that the invention is not limited to the
disclosed embodiments, but, on the contrary, is intended to cover
various modifications and equivalent arrangements included within
the spirit and scope of the appended claims.
* * * * *